Tracklaying machine



Sept. 2 1924'.

R. E. sTuBBs TRAGKLAYING MACHINE Filed Kay 5, 1924 7 Sheets-Sheet iSept. 2, 1924. 1,506,953

R. E. STUBBS TRACKLAYING MACHINE Filed May 5, 1924 7 Shets-Sheet z. N

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l'ihd lay 5, 1924 7 Sheets-Sheet 5 Sept. 2 1924.

R. E. STUBBS "TRACKLAYING MACHINE Filed Kay 3, 1924 I Sheets-Shee't L[1C Jill/11);,

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Sept. 2. 1924. 1,506,953

R. E. STUBBS 'TRAGKLAYING MACHINE 1mm Kay 5', 1924 7 Sheets-Sheet "r Toall whom it may concern:

Patented Sept. 2, 1924.

UNITED STATES 1,506,953 PATENT OFFICE.

ROBERT E. STUIBBS, DULUTH, MINNESOTA.

TRACKLAYING MACHINE.

Application filed May 3,

Be it known that 1, ROBERT E. STUBBS, a citizen of the United States,residing at Duluth, in the county ofSt. Louis and Stateof Minnesota,have invented certain new and useful Improvements in 'lracklayingMachines, of which the following is a spec1fica-- tion.

This invention relates to railway track laying machines and particularlyto a machine designed to lay both the ties and the .rails in theirproper spacedrelation ready for the usualspiking operation.

An object of the invention resides in providing a track laying machineincluding a core mounting a mainframe, carrying a plurality ofsupplemental drive shafts for driving a conveyor mounted in the centralportion of the main frame, and at the lower end thereof, for conveyingties from one end of the car to the other and also for driving a pair ofconveyors positioned at the outer sides of the track conveyor forconveying rails which are positioned thereon from a rack carried'by themain frame, the rails and ties being delivered to asupplemental frame,provided with suitable conveyors, and means for delivering andsuccessively positioning the ties in proper spaced relation beyond theend of the laid track, on which the car rides, for positioning the railsin proper relation beyond the ends of the laid tracks on the ties, readyto be fastened thereto.

Another object of the invention resides in providing a track layingmachine wherein a car adapted. to move on laid track is provided with aspecial frame having a side conveyor and a rack for rails, means beingalso provided in the frame for moving the rails onto the rail conveyors,so that both of the sides of the rails may be subsequently delivered toa supplemental frame extending from one end of the car, which areprovided with s ecial tie positioning means for successive y placing theties in proper spaced relation for a predetermined distance, equal, atleast, to the length of the rails to be laid, and which is also providedwith rail positioning means cooperating with the tie positioning meansfor accurately positioning the rails on the ties ready for spiking.

Another object of the invention resides in providing a track layingmeans including a car having a frame mounted on trucks adapted fortravel on the laid portion of the 1924. Serial No. 710,894.

track, and adapted to carry and convey ties and rails to the forward endof the frame, to a supplemental frame, movably carried and supported bythe forward end of the car frame, and adjustable relative thereto, sothat the supplemental frame may be moved to position the track beinglaid at the proper angle to the track already laid, as well as beingadjustable in a vertical plane to vary the relation of the bottomportion of the supplemental frame,

with respect to the road bed, means being provided on the main car framefor operating-and controlling the adjustment of the supplemental framerelative thereto, while the supplemental frame is provided with meansfor properly positioning the ties and rails beyond the end of a laidsection of track in proper alignment therewith, ready for spiking tocomplete another section of said track.

The invention also includes a number of other objects and numerousimprovements in the details of construction and association of the partsfor carrying out the operation of laying the ties and the tracks,.whichare more particularly described and pointed out in the followingdetailed description and claims, which are directed to a preferred formof the invention, it being understood that various changes may be madein the specificconstruction and arrangement of these parts for carryingout the desired results without departing from the scope and spirit ofthe invention as described and claimed.

In the drawings, forming a part of this application Figure 1 is a sideelevation of the car of the track laying machine, also showing a portionof the supplemental frame carried. thereby, the said machine being inposition for laying a section of track.

Figure 2 is a side elevation of the supplemental frame carried by thecar, showing the manner in which the machine positions the ties, andwhich is readable with Figure 1, to show the complete machine, byplacing the sheet containing Figure 2, at the left hand and of the sheetcontaining Figure 1.

Figure 3 is a plan viewlof thecore portion of the track laying machine,as shown in Fi re 1.

igure 4 is a plan view of the up er portion of the supplemental frame oft e track laying machine, as shown in Figure 2.

Figure 5 is a longitudinal section through the forward end of thesupplemental frame, illustrating the manner in which the ties are guidedand positioned on the road bed,

FigureG is vertical longitudinal sectional view, through the forward endof the car,

and a portion of the. supplemental frame,

showing the manner of mounting the frame thereon. and also the manner oftransferring the ties and rails from the car frame to the supplementalframe.

F igure 7 is a vertical sectional view, taken on the line 77 of Figure5.

Figure 8 is a horizontal sectional view, taken on the line 88 of Figure6.

Figure 9 is a vertical sectional view, taken on the line S)9 of Figure6.

Figure 10 is a detall perspective View of the gate for closing the tieguide.

Figure 11 is a detail view of the receivmg conveyor.

Figure 12 is a plan view of a portion of the main car frame showing thedriving and controlling mechanism.

Figure 13 is a sectional view taken on line 1313 of Figure 12.

Figure 14 is a detail 'view of one of the drums on the supplementalpower shafts showing the manner of operating the drums in the rotationof the shafts.

A section of laid track includes spaced tie's 1 and track rails 2, andon which is adapted to ride the car 3, of the track laying machine,which includes a main frame indicated generally at 4, which is mountedon trucks 5, of any desired and ordinary construction. The main carframe includes a base frame formed of inner side bars 6 and outer sidebars 7 (Figures 3 and 8), which are arranged in spaced relation to theinner side bars and are of angular cross section. A plurality ofuprights and brace members,

indicated at S, extend upwardly from the outer side bars 7, forsupporting a top frame 9, at the upper ends thereof. The side bars ofthe brace frame are connected together in spaced relation, in anysuitable and desired manner, by end bars and the like. A plurality ofspaced inverted U- shaped frames 10 (Figures 1 and 6), are secured tothe inner side bars 6, so that the central horizontal portions thereofare mounted above the base frame, in spaced relation, and whichcooperates to form a rail supporting rack. Conveyor drive shafts 11 and12, are rotatably mounted in the forward and rear ends of the base frameof the adapted to engage and convey ties from the between the side bars6, as indicated at 15,

secured to the end bars of the base frame, and certain of which arepositioned under the upperiflights of the conveyor chain 13, as clearlyshown in Figures 3 and 8. A tie receiving conveyor is indicated at 16,which includes a pair of spaced parallel side members pivotallyconnected, at one end, to the drive shaft 12, of the conveyor 13, andwhich supports an idler shaft at the outer free end thereof, forcarrying a pair of spaced endless conveyor belts or chains,having aplurality of spaced projections, adapted in the rotation of the shaft toreceive and convey ties from the track rails 2, to the conveyor belt 13,so that the may be fed to the forward end of the car rame.

The top frame 9 carries a track beam 17 which movably mounts a carrier18, for a hoist, at the rear end of the car, in order that rails may behoisted for positioning into the rail rack in the car. A plurality ofsupplemental drive shafts are indicated at 19 as shown in Figure 1, therearmost one of which is provided with drums for receiving and operatingcables 20 extending to the traveller 18, for moving the same along thetrack beam 17. In this way, it will be seen that rails may be hoistedfrom beyond the rear end of the car and carried by the traveller forpositioning on the rail rack formed by the frames 10. In this operation,the control of the rearmost shaft 19 governs the movement of thetraveller on the track beam. The next adjacent supplemental power shaftis provided with suitable drive connections 21, with the shaft 12, andshaft 22, which is an idler shaft having a drive connection 23 with theshaft 11, for positively driving the shafts 11 and'12, and consequentlythe conveyor belts or chains 13, so that ties will be conveyed from therear to the forward ends to the main frame of the car.

The base portion of the main frame is provided with a cross beam 24,Figure 8, which mounts a pivot bar 25, Figures 6 and 8, which hassecured thereto, the pivoted cross piece 26 carried at the rear end of asupplemental frame indicated generally at 27 in Figure 2, the base frame28 of which is pivotally connected to said cross beam 26, as indicatedat 29, to permit of the vertical movement of the base frame, relative tothe car. The supplemental frame 27 includes a supporting or top frame30, pivotally connected to uprights carried by the forward end of thebase frame 28, and at the opposite end to a transverse bar member 31,Figures 3 and 6, which is pivotally connected in the lOl) centralportion to a pivot bar 32, carried by a cross beam 33, secured in -thetop frame 9 of the car. The top frame 30 includes a pair ofpivotally'connected link sections 34 and 35, adjacent the transverse bar31, the section 34 being pivotally connected to the end of said bar, sothat when it is desired to lift the base frame 128 above the horizontallevel, or plane of the base-portion of the main frame of the car, thelink sections will pivot relative to one another for permitting thismovement. A tackle construction including pulleys 36 carried by theforward end of the top frame 30, and the central portionof thetransverse bar 31, are adapted to receive a cable 37, which is anchoredat one end to the portion of the top frame which carries two pulleys 36and which is passed over both of the pulleys 36, and the other end ofwhich is extended to a drum on one of the power shafts 19, so that itmay be operated and controlled through the operation of said shaft. Thebase frame 28 of the supplemental frame, includes inner side bars 38,and outer side bars 39, arranged in spaced relation in the same manneras the side bars 6 and 7 of the base frame of the car, and which are insubstantial alignment therewith. A shaft 40 Figures 6 and 8, which is anidler shaft, is mounted for rotation between the rear ends of the innerside bars 38 of the supplemental frame, and receives a conveyor member41, which is driven by the shaft 11, in the main frame, and'whichoperates to convey the ties from the forward end of the main frame, ontothe'rear end of the supplemental frame. A plurality of bars 42, aremounted transversely of the supplemental frame, in spaced relation, andsecured between the inner side bars 38, the rear bar 42 in said frame,being provided with a pair of guide strips 43, for receiving andsupporting, as well as guiding the ties bein delivered by the conveyor41, onto the suppimental frame. Guide members 44 for the ties are formedof substantially U- shaped bars, and mounted in spaced relation on thecross bars 42,- as clearly illustrated in Figures 5 and 8, the guidemembers on adjacent bars being in longitudinal alignment and cooperatingto form guide ways 45, for

guiding and positioning loose ties 46, con.- veyed through the mainframe of the car, and the supplemental frame for successive positioningby the guide frame, in proper relation on the bed for the track way.

plurality of shafts 47 are rotatably mounted in the inner side bars 38of the supplemental frame, and correspond in number to the cross bars42, there being one shaft mounted immediately in the rear of andadjacent each of these cross bars. Each shaft is provided with a pair ofarm members 48 having guide arms 49 Figures 5 and 10 arranged in angularrelation to operating or tie engaging arms 50. The operating arms are ofa ength less than. the distance between a pair of the bars 42, butsufliciently long to bar 42,the guide arm being sufficiently long tospan the distance between-the cross bars, so that the following tie willnot be permitted to pass into the guide way which just received a tie,but will be forced or guided toward the front end of the supplementalframe, to the next adjacent guide way. The

ends 49 are notched as at 49' to fit the edges of the adjacent crossbars 42 to form secure bridge for the passage of the following ties. Inthis way, it will be seen that a plurality of ties are successivelydelivered to the guide ways, in the supplemental frame, for positloningin proper spaced relation on the road bed, and in a manner that only onetie will be admitted to each guide way. The shafts 47 are provided atone end with crank arms 51, to which is secured a flexible cable 52Flgures 2 and 10, which extends rearwardly along the side of thesupplemental frame, and is connected to all of said crank arms, the rearend of the flexible cable extending to the car frame 3, into a position1n convenient reach of the operator of the machine, for controlling theoperation of the shaft and returning them to their nor mal position forpermitting the delivery of ties successively to the guide ways. A tiepusher device is mounted on the supplemental frame, and includes a pairof shaft members53 and 54, which mount sprockets for receiving anendless pusher chain 55,

provided with a plurality of projections 56 formin pusher elements forengagement with ties delivered to the supplemental frame, and pushingthem along the base portion 28 of the frame, over the guide members 44and the guide arms 49. A drive connection 57 is provided between theidler shaft 22 carried at the forward end of the top frame 9, and drivenby the connection 21, for driving the pusher device, so that the tieswill be moved forwardly in the supplemental frame, and deliveredthereto.

A plurality of rollers indicated at 58, are rotatably mounted betweenthe inner and outer side bars 38 and 39 respectively, and

are adapted to convey track rails along the" supplemental frame atopposite sides of the tie conveyor thereof. These rollers 58, which formrail conveyors in the supplemental frame, are in alignment with trackrail conveyors in the main frame mounted between the side bars 6 and 7respectively,

and which include endless conveyor belts 519, which are mounted onsprockets carried by the drive shafts 11 and 12 respectively.

' Drums 60 are shafts 19, WhlCh areiadapted to operate.

rovided on one of the power conveyor belt 59, so that a pair of railsmay be delivered to the conveyor rollers 58, carried by the supplementalframe for positioning-on the ties laid, in the manner above described,on the road bed. After the railslongitudinal alignment with the car andthe main frame thereof,-so that where a slight turn in the track isdesired, the supplemental frame may be turned to. the correspondcar, andonto the conveyor chain 13, to be conveyed under therail rack, to theforformed with a return bend v having thew:

are delivered to the supplemental frame, the ward-end of the car, anddelivered to the hoist 62 carried in thecentral portion of thesupplemental, frame b a the auxiliary contop frame 30, and by uprights63 secured to veyor 41, onto the gui e plates 43, at which the baseframe 28, has cables extending to time they will be picked up by thepusher one of said supplemental power shafts, for conveyor belt 45, andpushed along the supoperation, in connection therewith, so thatplemental fi'ame, for successive depositing the rails may be lifted fromthe rollers 58,' in successive guide ways 45, so that the foland dischared or lowered-beyond the outer .lowing ties Wlll slide over theguideways to side rails o the base portion 28 of the supwhich ties havebeen delivered on the guide plemental frame, onto rail positioning arms49 to the next guide way for. delivery. guides 64, a plurality of whichare mounted After a predetermined number of ties are in spaced relationalong the sides of the base delivered and positioned on the road bed,

frame 28, in a manner as clearly shown in in advance of the laid'section of the track Figures 2 and 7. These rail positioning 2, in amanner clearly illustrated, particuguides include bar members, which arelarly in Figures 1, 2, and 5 of the drawings, rail will'cbe delivered tothe rail conveyor free ends secured to the inner side bars of I elt 59,at each side of the main frame, from the base frame 28, and the outerends of a pile of rails carried by the rail rack formed which areextendeddownwardly and inclined by the frames 10, which have beenpreviousinwardly as indicated at 66,, under the sides of 1y piledthereon through the use of the travthe base frame 28, and the terminalsof which, eller 18 and. the hoist carried thereby for at the lower end,terminate in a parallel delivery to the supplemental frame, atoppospaced relation, outside of the tie guiding site sides thereof, onthe rollers 58. The members 44, as indicated at 67, and are hoists 61are brought into play for deliverspaced from the tie guiding orpositioning ing the rails from the rail rack to the con,-

members a distance eqnal to the width of the veyors 59 while the hoists62 are used for base flange of the track rails. From this lifting therails from the rollers '58, to deconstruction, it will be seen that therail liver them downwardly onto the ties which positioning guides, andthe tie positioning are laid on the road bed, and in which deguidescooperate for guiding the rails lowlivery the rails are guided by thepositionered by said hoist 61, onto the ties, in proper ing guides 64.It will thus be seen that the spaced relation, and at a proper gauge, inreds are properly positioned beyond the alignment with the track rails2, on the laid ends of the laid section of the track indiportion of thetrack. When the rails are cated at 2, for proper connection thereto, to

positioned by the cooperative guiding action form another section oflaid track, upon the of the rail positioning guides 64 and the tiespiking of the rails to the ties and the conpositioning guides 44, theyare then ready nections with the ends of the rails 2. If, for forconnection with the ends of the track any reason, it is desired to raisethe supplerails 2, and for spiking to the ties, in the mental frame,from the position shown in 'usual and well known'manner, for completthedrawing, the operation of the proper ing the laying of the track sectioncovered and supplemental power shaft 19, for operby the supplementalframe. atlng the cable 37 Wlll operate the tackle A pair of brackets 68are mounted in opcarried by the top frame 30, for lifting the positeends of the cross bar 26, supporting base frame 28 upwardly at whichtime the the base frame 28 of the supplemental link sections 34 and 35will have a relative frame, from the main car frande, and cables pivotalmovement. The operation of an- 69 are connected thereto, at each side ofthe other of said supplemental power shafts 19 main frame, and passedover suitable pulfor operating the cable 69, Wlll effect a pivleys 70,and upwardly to'one of the suppleotal movement of the supplementalframe, mental power shafts, for control by the opon the pivot bars 25and 32 respectivel for erator of the machine, to position thesupswinging the frame to an angular re ation plemental frame at adesired angle, or in with .respect to the main frame of the car,

lllh

in order that the proper curvature desired, in layin a predeterminedsection of track will be had. v

Figures 12 to 14 show more particularly the power generating and controlmeans-for distributing the power for operating the supplemental powershafts 19. The top portion of the main frame of the car carries aplatform 71, on which is mounted a power generated means, which may be1n the form of an internal combustion engine, as mdicated at 72, saidpower generating means being connected to the several supp emental powershafts by suitable chain and sprocket drives 73, or in any othersuitable manner found desirable. The operator of the machine stands onthe platform 71, and con trols a plurality of levers 74 having asuitable connection designated generally at 75, for operating frictionclutch elements 76, mounted on the supplemental power shaft, forfrictional engagement under operation, by the respective lever, to causea rotation of the respective drum with which 1t cooperates for operatinga desired part of the apparatus.

It will be seen therefore, that a traclc laying machine has beenprovided, whlch 1s operable from a single control point, 1n order thatone operator may effectively control the operation of the whole machine,in the laying of the ties in the track, 1n a manneras above described.

From this construction, it will therefore be seen that a substantiallysimple, yet efficient track laying machine has been provided, for layingboth ties and tracl &, in proper spaced relation, ready for spiking andconnection with a laid section of track.

What is claimed is:

1. A track laying machine comprising a car having a main frame carriedby wheeled trucks, a supplemental frame mounted on the forward end ofsaid car, a plurality of tie guiding members carried by said sup-'plemental frame, having means in cooperation therewith, for guiding andsuccessively placing ties in proper spaced relation on a road bed, inadvance of the car, means for feeding ties along said supplementalframe, rail conveyors carried by the supplemental frame, railpositioning members carried by the supplemental frame, and adapted forpositioning track rails on the ties, operating means carried by the maincar frame and connected with the tie feeding means of the supplementalframe, for operating said means, tie and rail conveying means mounted inthe main frame for delivering ties and rails to said supplemental frame,and means for controlling the operation of the tie and rail feedingmeans and the tie and rail positioning means of the supplemental frame.

2. A track laying machine comprising a car having a wheel carried frame,a supplemental frame mounted for horizontal swinging movement on oneendof the main car frame, means for swinging and controlling theswinging movement of said supplemental frame, said supplemental framebeing also mounted for a pivotal movement in a vertical plane, meanscarried by the main car frame for effecting and controlling the verticalpivotal movement of said supplemental frame, a series of tie positioningguides carried by said supplemental frame, for positioning a pluralityof guides in proper spaced relation on a road bed, means for seating andcontrolling the delivery of t1es to said tie guide, rail conveying meanscarried by the supplemental frame, rail posltionmg means carried by saidsupplemental frame, for positioning the rails of said ties, and meansfor feeding and controlling the feed of ties and rails to saidsupplemental frame, and the operation of the tie positlomng means.

3. A track laying machine comprising a car having a frame carried bywheeled trucks, supplemental frames mounted on one end of and projectingforwardly of said car frame, a plurality 0 tie positioning guidesmounted in said supplemental frame, for pos tiomng ties in predeterminedspaced relat on on a road bed, a plurality of rail positiomn guidesmounted on said supplemental ame, for cooperation with the trackpositioning guides, to position rails on the laid ties, and means forfeeding and dellverlng ties and rails to said tie positionmg guides andrail positioning guides, to be laid in track forming cooperation. 4. Ina track laying machine, a car havmg a wheel carried main frame, asupplemental frame mounted on and projecting from one end of the wheelcarried frame, a plurality of guide members arranged in aligned spacedrelation for cooperation to provide tie guide ways for receiving andpositioning t1es.in proper spaced relation on a roadbed, a plurality ofmovable members cooperating with the tie guide way and operable topermit the delivery of a single tie to each guide way and to prevent thesubsequent delivery of ties thereto, means for returning the movablemembers to a position for permitting the subsequent delivery of ties tothe guide way, and means for conveying ties to the supplemental frameover the guide ways for positioning on the road bed thereby.

5. A track laying machine including a wheel carried main frame, asupplemental frame mounted on and projecting from one end of the wheelcarried main frame, a plurality of tie guide members mounted in alignedspaced relation in the supplemental frame, to form tie guide ways, aplurality of movable members having operating arms normally positionedacross the guide ways,

said members also having guide arms, and

means for feeding and delivering ties from the main frame to thesupplemental frame, and the guide ways, whereby the ties Wlll besuccessively delivered and spaced in proper spaced relation on a trackbed by sald guide ways controlled by said movable member, the-tiessuccessively operating the operating arms of the movable members forpos1t1oning the guide arms across said guide ways for preventing morethan one tie from being delivered to a guide way.

6. A track laying machine mcluding a truck carried main frame, asupplemental frame projecting from and mounting on one end of said mainframe, a plurality of tie guiding members formed of bars arranged ininverted U-form and mounted in aligned spaced relation in saidsupplemental frame, for cooperation to form tie guldeways, means carriedby said supplemental frame and associated with each of said guide waysfor controlling the delivery of ties thereto, to permit only one tie tobe delivered to a guideway, and means for feed1ng and delivering tiesfrom the main frame to sa d supplemental frame for delivery by saldguide ways and positionlng thereby on a road bed.

7. A track laying machine including a truck carried main frame, asupplemental frame mounted on and projecting from one end of said mainframe, a plurality of tie receiving. and guiding members mounted in saidsupplemental frame for guiding and positioning ties delivered to saidframe, in proper spaced relationpn a roadbed, means for controlling thedellvery of said ties, by said guide members, an endless pusher conveyormounted in said supplemental frame, above said guide ways, and adaptedfor operation to feed and push ties through the supplemental frame, fordelivery to said guide members, operating means earned by the mainframe, for the endless conveyor in the supplemental frame, railconveying and positioning means carried by the supplemental frame, fordehverlng and positioning rails in proper spaced relatlon on the laidties. and means for delivering ties and rails from the main frame to thesupplemental frame. I

8. A track laying machine comprising a car including a frame carried bywheels of trucks, a tie conveyor mounted in the lower ortion of saidframe for conveying ties .rom one end of the car to the other, railconveyors mounted at the sides of the tie conveyors, a rail rack mountedin the frame above the tie conveyor, and a supplemental frame mounted onone end of the car and movable relative thereto, including a pluralityof tie positioning elements, means operable in the delivery of ties forpermitting the successive delivery and positioning of a tie to eachelement, rail conveyors carried by a supplemental frame, railpositioning elements on the frame for positioning the rails on the ties,and operating and controlling means on the car frame, for controllingthe conveying and delivery of ties and rails to the supplemental frame,and the positioning thereof in track forming relation from saidsupplemental frame.

9. A track laying machine comprising a car including a wheel carriedmain frame having a base portion and a top portion, a tie conveyormounted in the main frame for conveying ties from one end of said frameto the other, rail conveyors mounted at the sides of said tie conveyorin the main frame, for conveying rails through said main frame, a railrack carried upon the tie and rail conveyors and mounted over said tieconveyor, hoisting means carried by the top portion of said main frame,for hoisting rails and positioning them on the rail rack, other hoistingmeans for delivering rails from the rail rack to the rail conveyors andauxiliary tie delivery conveyors for delivering ties from the rear endsof the car to the tie conveyor in the main frame, a supplemental framemounted on the forward end of the car for a relative horizontal orvertical swinging movement, means carried by the main car frame formoving and controlling the movement of the supplemental frame, aplurality of tie positioning means carried by the supplemental framesfor successively positioning ties in proper spaced relation on a roadbed, conveyor means carried by the supplemental frame for cooperationwith the tie conveyor of the main" frame for receiving and feeding tiesalong the supplemental frame to the tie positioning means, railconveyors arranged in aligned relation in said su plemental frame with'the rail conveyors of the main frame,

for receiving rails therefrom, rail positiona ing' means carried by thesupplemental frame for positioning railsin track forming relation on theties delivered to the road bed, and operating means for operating andcontrolling the conveyors in the main frame, the conveyor in thesupplemental frame, and the tie and rail positioning means.

In testimony whereof I affix my signature,

ROBERT E. STUBBS.

